FRITZ!Fon C4 Service - Knowledge Base
FRITZ!Fon reports "format error"
When you attempt to listen to Internet radio or podcasts with your FRITZ!Fon, the message "format error" is displayed on the telephone's display and playback fails.
1 Format is not supported
The Internet radio station or podcast is saved in a format that is not supported by your FRITZ!Fon, for example "wma" or "asf". FRITZ!Fon can only play Internet radio stations or podcasts that are saved in the playlist format "pls" or "m3u" and refer to an mp3 stream.